Snedeker, who won the AT&T Pebble Beach National Pro-Am by two strokes on Sunday to cap a torrid start to his season that includes a pair of runner-up finishes (Farmers Insurance Open and Waste Management Phoenix Open) and a tie for the third at the Hyundai Tournament of Champions, is expected to miss three weeks because of the injury.

“I don't know if it's just weakness in that area, the way he sits on a plane, I just don't know. I don't think it has anything to do with his golf swing,' said Todd Anderson, Snedeker's swing coach.

'Right now it's a big unknown, he just wants to be sharp and ready for Augusta.'

Snedeker’s Sea Island (Ga.)-based trainer Randy Myers told GolfChannel.com that he strained the rib during a practice round at the Humana Challenge and re-aggravated the injury on Thursday at Pebble Beach. Snedeker had an X-ray on Monday in California and is awaiting the results of that test. He plans to return to Nashville, Tenn., later this week to meet with his doctor, Dr. Burton Elrod.

“He felt like he was playing well enough after the Humana he wanted to keep playing,” Myers said. “His biggest concern is he worked so hard to become a No. 1 seed (for the Match Play) and he’s played well there, (but) this is just preventative.”